Performance of 5 different displays in the detection of artificial incipient and recurrent caries-like lesions

Shawn Chancy Countryman, Saulo Leonardo Sousa Melo, Manuella Dias Furtado Belem, Francisco Haiter-Neto, Marcos A. Vargas, Veeratrishul Allareddy
2018 Oral surgery, oral medicine, oral pathology and oral radiology  
Objectives: To evaluate the influence of five different displays on the diagnosis of artificial caries-like lesions on restored and unrestored tooth surfaces. Materials & Methods: 60 extracted human teeth (30 premolars and 30 molars) were selected. All molars had class II cavities prepared and restored. Half of the premolars and molars were randomly selected and a 7mm² area was exposed to a demineralizing solution for 120 days. Phantoms with four teeth (two premolars and two molars) were
more » ... . Periapical radiographs were obtained on RVG 6100 digital sensor (Kodak Dental Systems, New York, USA). The images were evaluated under subdued lighting on five viewing displays (Barco MDNC-3321, NEC Wide, Apple iPad Pro, Microsoft Surface Pro 4 and Dell flat panel monitor) by three observers using a five-point rating scale. Sensitivity (Sn), specificity (Sp), accuracy (Ac) and Receiver Operating Characteristic (ROC) curves and their areas under the curves (AUC) were calculated and compared by Analysis of variance and post-hoc Tukey test. Intraobserver and interobserver agreements were accomplished after a three month observational interval. The observer agreement was evaluated with the Cohen's kappa test. Results: Even though the tablets slightly improved accuracy over the medical monitors, there was no statistically significant difference in sensitivity, specificity, accuracy or AUC among the five monitors when the same tooth group was considered (p<0.05) with the exception of the iPad Pro, which had a specificity p-value of 0.014 when comparing the two materials. Conclusion: There is no perceivable disadvantage to utilizing a higher resolution tablet viewing platform for plane images. No advantage to the medical grade monitors over iii the tablets or the consumer monitor. Both tablets improved detection accuracy on the unrestored premolars. However further evaluation, especially in a clinical lighting setting, is warranted to evaluate a displays impact on observer performance within common clinical practice lighting parameters. iv PUBLIC ABSTRACT Dental x-ray images are commonly viewed as digital images on computer monitors. The process and technology to acquire the image is independent of the viewing and interpretation of the radiographs. The difference in cost, technical, and software abilities of computer monitors is vast. There are two established categories of monitors currently in use: The off the shelf desktop and the highly specialized medical grade monitor. With the
doi:10.1016/j.oooo.2017.11.004 pmid:29242128 fatcat:b4zyiqn22zbdlfnpsi72fbfuzy